Ventilator.



1. GREENBURG.

I VENTILATOR APPLICATION FILED JULY 24, I916 Patented June 5, 1917. Fig. 1.

lnven'for. Joseph G rfi enburg yfwdmg W Anys.

UNITE JOSEPH GREENBURG, 0F ROXBURY, MASSACHUSETTS.

VENTILATOR.

Specification of Letters Patent.

Patented June 5, 1917.

Application filed July 24, 1916. Serial No. 110,831.

To all whom it may concern:

Be it known that I, JOSEPH GREENBURG, a citizen of the United States, residing at 21 Hollander street, Roxbury, Massachusetts, have invented an Improvement in Ventilators, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to an improvement in ventilators and is adapted for use on street and steam railway cars and other closed, vehicles. necessity for the employment of power-actuated ventilating mechanisms, and func tions simply by the utilization of the aircurrents induced by the motion of the vehicle body. The device operates not only to assure a supply of fresh air but also functions to draw 01f the vitiated air from the car thus entailing an effective circulation of the air supply. This novel organization is preferably built into a car and comprises a casing mounted adjacent the car roof or top and opening into the car at such place. A novel arrangement of openings, air passages, vanes and webs effect the air circulation.

The general object of this invention is to assure an effective air circulation in vehicle bodies of the closed or semi-closed type.

A more specific object is to produce a device which assures air circulation through currents induced by the motion of the vehicle body without'the employment of other current actuating media.

Other objects of thecinvention will more fully appear from the following description and the accompanying drawings and will be pointed out in the annexed claims.

In the accompanying drawing, there has been disclosed a structure designed to carry out the objects of the invention, but it is to be understood that the invention is not confinedto the exact features shown, as various changes may be made within its reasonable scope.

"under attendant conditions of expcsurc This device obviates the hard sery ice. A longitudinal opening is provided in the car frame 1 and secured thereto is the ventilator frame 2 which supports the different parts of this ventilator organization.

A plurality of what have been termed vanes extend longitudinally the car opposite the body opening 1. Within each space comprehended between adjacent pairs of vanes is positioned a means for deflecting into the "the accompanying drawings. The ventilator structure comprehends a conduit 3 which is positioned within the car. The conduit disclosed is substantially a square air-passage which is open into the car interior at each end. In this preferred construction, the conduit top 4: and bottom 5 have integral extensions projecting to the car exterior. The top 4 of each unit extends outwardly less far than the bottom 5. The extensions of the successive bottoms 5 form the longitudinal vanes 10. The end of a web 6 is secured, preferably by soldering, to the top and bottom of each external conduit extension. The end portions of this web are angularly disposed with relation to the longitudinal edge of the conduit so that they functionto deflect air currents induced by the vehicle motion into the conduit and thence into the car interior. The major portion 11- of the web 6 functions as the outer side of the conduit. As stated, and as graphically disclosed in Fig. 2, the conduit top at terminates short of the bottom 5 of the conduit. Above the topof any one conduit unit is located the bottom of the superposed unit. The adjacent vanes 11, which in this construction are extensions of the bottoms 5 of the superposed units, form an air passageway. The air, entering the end spaces between two adjacent vanes, is partly deflected by the substantially centrally disposed web 6 to the car interior, via the conduit; while the other part pursues a generally straight rearward course. As is shown in Fig. ,1, there is a 7 space between a superposed vane and the acent unit top by which air, as indicated by thearrows 12, may freely flow from the car interior. Hence, as the external air, by

virtue of the motion of the vehicle, rearwardly rushes, the vitiated air of the'vehicle interior is sucked outwardly by the attempted creation of a partial vacuum in the space between a unit bottom and the adjacent unit top. Thus a full and free circulation of air is afforded to a car interior. As is perceived from Fig. 2, there is formed at each external end of the conduit extension a flaring head 7 having a relatively fine mesh screen 8 across its mouth to cleanse in a degree the in-rushing air. This flaring structure functions to increase the air supply directed through the ventilator by the motion of the car or vehicle. This ventilator structure has both of its ends substantially similarly formed so that a symmetrical structure results in order to assure proper functioning in both directions of car movement.

I The operation of the device is very simple and is highly efiicient. For purposes of illustration, suppose that a car to which this ventilator structure of Fig. 2 is secured is moving to the right. Obviously, a draft of air variable with the car speed will enter the flared head and pursue the course indicated by the arrows; Parted by the web 6,

one portion is deflected thereby to the interior; car conduit, the remainder tends to rush rearwardly undeflected. And, in so moving draws with it the vitiated air from the car interior carrying it outwardly mostly through the space affordedby the opensides ofthe ventilator exterior.

This novel device achieves a simple and eflicient circulation of air through a closed vehicle body without the intermediary of a power unit. It is constructed of few parts which may be inexpensively produced and installed and the completed organization is I durable-standing up well under all conditions of service. It is adaptable to uses on railroad, electric street railway rolling stock, closed motor vehicles and the units may easily be varied in number, size and shape to conform to their varied employment. 7

It is to be understood that the construction disclosed herein is illustrative but not restrictive and that the same may be modified within the meaning andscope of the claims which follow. 7 7

Having fully described my invention, what Iclaim as new and desire to secure by Letters Patent is: V 7

1. A ventilator for vehicle bodies positioned at an opening in the body: and comprising a plurality of external vanes disposed longitudinally the body at said openinfg whereby air .may be drawn from the 7 body interior to the 'vaneeconiprehended spaces; and an air conduit positioned opposite .each space within said body and opening' into the body, each conduit having its end portions extending into the adjacent vane comprehended space whereby, upon movement of the vehicle body in either direction, a portion of the air currents induced between adjacent vanes is deflected to the the vanes is deflected to the body interior and vitiated air is drawn therefrom by the undeflected currents.

3. A ventilator for vehicle bodies positioned at an opening in the body and comprising a pair of external vanes disposed longitudinally the body at said opening whereby air may be drawn from the body interior to the vane comprehended space, an air conduit within the body and open thereinto, and an air duct in'said space to deflect air into the conduit whereby, upon movement of the vehicle body, a'portion of the air currents induced between .the vanes is deflected. to the body interior and vitiated air is drawn therefrom bythe undeflected currents.

4. A ventilator for, vehicle bodies positioned at an. opening in the body and comprising a plurality of external vanes disposed longitudinally the body at said opening whereby air may be drawn from the body interior to the vane comprehended spaces; an air conduit within said body opposite each space, each conduit communicating with the body interior; and means in each of said vane comprehended spaces to.

deflect air into each of said conduits whereby,rupon movement of the vehicle body, a portion of the air currents induced between each of the adjacent vanes is deflected to the body interior and vitiated air is drawn therefrom by the undeflected currents.

5. A ventilator for vehicle bodies positionedfat an opening in the body and comprisingexternal vanes disposed longitudinally the body at said openingwhereby air may be drawn from the body interior to the vane comprehended spaces; an air conduit within said body oppositeeach space,

each conduit communicating'with; the body interior; means 1n each ofsald vane comprehended spaces to deflect" air intoeach of said conduits whereby, upon movement of .the vehicle body, a portion of the air currents induced between each of 'the adjacent vanes is deflected to the body interior and vitiated air is drawn therefrom by the uncleflected currents; and a flaring instrumentality secured to the ends of the external vanes to deflect air between the vanes.

6. A ventilator for vehicle bodies positioned at an opening in the body and comprising a plurality of external vanes disposed longitudinally the body at said opening whereby air may be drawn from the body interior to the vane comprehended spaces; an air conduit Within said body opposite each space, each conduit opening at each end into the body interior; and a plurality of means in each of said vane comprehended spaces to deflect air into each of said conduits whereby, upon movement of the vehicle body in either direction, a portion of the air currents induced between each of the adjacent vanes is deflected to the body interior and vitiated air is drawn therefrom by the undefiected currents.

In testimony whereof. I have signed my name to this specification.

JOSEPH GREEN BURG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

